Encrypt Hash

1 Introduction e-mail plays an important role in people's work. According to statistics, the average Chinese per user receives 4.4 mails a week, sends 3.6 emails. But the primary protocol for e-mail, such as SMTP, is delivered in plaintext. This information may be obtained by a third party when it passes through an untrusted internet. In a modern society that attaches importance to information security, it clearly meets the requirements. How can this information be kept confidential without tampering or forgery? The PGP (Pretty-Privacy) described in this article is a kind of software, which is mainly used for electric ...

The Internet of things is a kind of network which uses computer technology, Internet technique, communication technology, sensing technology and so on to connect the goods with the net to realize the function of information transmission, intelligent recognition and object management. With the wide attention to cloud computing technology, cloud storage technology has been widely paid attention to. Cloud storage can integrate a variety of storage devices under the support of a series of software, which forms the use of empty users of mass storage space. 　　Using cloud storage Service, IoT suppliers can achieve the goal of avoiding the data storage center, saving operation cost and improving service quality. One...

In the modern information society, when the email is popular, the security problem is also very prominent. In fact, the process of e-mail transmission is the process of repeated replication on the network, the network transmission path is uncertain, it is easy to be unknown identity of the theft, tampering, and even malicious destruction, to send and receive both sides trouble. Information encryption to ensure the security of the transmission of e-mail has become an urgent demand for the vast number of e-mail users. The appearance and application of PGP solves the problem of secure transmission of e-mail well. Combining the traditional symmetric encryption with the public key method, we have two ...

Intermediary transaction http://www.aliyun.com/zixun/aggregation/6858.html ">seo diagnose Taobao guest cloud host technology Hall to prevent some ulterior motives from accessing the database from the outside, stealing the names and passwords of users in the database, Other important information, such as credit card numbers, when we create a database-driven solution, the first design decision we need to consider is how to encrypt the stored data to keep it safe from others ...

The two-day RSA 2010 conference ended in Beijing, but many in the industry and Internet security enthusiasts are still feeling the meaning of the end. So, 51CTO as a guest media, the General Assembly of the relevant reports. Here we'll tidy up the wonderful speeches in the conference. The following is a lecture by Assistant professor Haibo of the Institute of Parallel Processing, Fudan University, on the subject of the application of the trustworthy structure in the privacy and security of cloud computing services. See the RSA 2010 Information Security International Forum feature for more details. Haibo: Good afternoon! I am Chen from Fudan University.

The Internet of things is a kind of network which uses computer technology, Internet technique, communication technology, sensing technology and so on to connect the goods with the net to realize the function of information transmission, intelligent recognition and object management. With the wide attention to cloud computing technology, cloud storage technology has been widely paid attention to. Cloud storage can integrate a variety of storage devices under the support of a series of software, which forms the use of empty users of mass storage space. 　　Using cloud storage Service, IoT suppliers can achieve the goal of avoiding the data storage center, saving operation cost and improving service quality. One...

Strictly speaking, a database is a warehouse that organizes, stores, and manages data according to data structures. In the daily work of economic management, it is often necessary to put some relevant data into such "warehouse" and deal with it according to the need of management. For example, the personnel departments of enterprises or institutions often have to put the basic situation of the staff of the Unit (employee number, name, age, sex, place of origin, salary, resume, etc.) in the table, this table can be considered as a database. &http://www.aliyun.com/zixun/aggreg ...

PGP itself is a data security product, what security problems does it have? "No data security system is unbreakable," Philzimmermann, author of PGP, said in the PGP document. "PGP is no exception. We look at its security vulnerabilities in order to let users know what will degrade the security of PGP and how to avoid them. Here are the vulnerabilities: passwords or private key leaks, public key tampering, files that you delete are restored, viruses and Trojan horses, physical security is violated (physical security refers to the security of physical resources such as computers) 、...

Cloud computing is a form of distributed computing, an online network service delivery and usage model that obtains the required services on an as-needed and extensible basis over the network. is a network of services and hardware and software collections of data centers that provide this service. Cloud computing is the evolution of parallel computing, distributed computing and Grid computing. The implementation of cloud computing includes software as service, utility computing, platform as service, infrastructure as service. Cloud computing already has some applications, such as Google's docs, and Microsoft and Amazon have similar cloud computing services. ...

Cloud computing is a form of distributed computing, an online network service delivery and usage model that obtains the required services on an as-needed and extensible basis over the network. is a network of services and hardware and software collections of data centers that provide this service. Cloud computing is the evolution of parallel computing, distributed computing and Grid computing. The implementation of cloud computing includes software as service, utility computing, platform as service, infrastructure as service. At present, cloud computing already has some applications, such as Google's docs, and Microsoft, Amazon also has a similar cloud ...